Our Guide To Keeping Yellow and Black Comet Goldfish

1. About Fish Species:

   • Scientific name: Carassius auratus
   • Common name: Yellow and Black Comet Goldfish
   • Family: Cyprinidae
   • Origin: Bred in the United States (descended from Asian carp)
   • Adult length: 15 to 25 cm
   • Lifespan: 10 to 15 years (can exceed 20 years with proper care)
   • Diet: Omnivore
   • Care Level: Easy
   • Temperament: Peaceful

2. Tank Setup:

   • Comet Goldfish need ample space due to their active swimming habits and size. A minimum of 75L per fish is ideal, with extra space for each additional goldfish.
   • Use smooth decorations and hardy live or artificial plants. They tend to uproot delicate plants during foraging.

3. Water Parameters:

   • Maintain a pH between 6.5 and 7.5 for optimal health.
   • Keep water temperatures between 18 to 23°C (64 to 74°F).

4. Filtration and Water Flow:

   • Strong filtration is necessary to handle the high waste output of goldfish.
   • Ensure moderate water flow to provide oxygenation without stressing the fish.

5. Diet:

   • Feed high-quality goldfish flakes or pellets daily.
   • Supplement with blanched vegetables like spinach, lettuce, and peas, and offer occasional protein-rich treats like bloodworms or brine shrimp.

6. Tank mates:

   • Best kept with other comet or common goldfish of similar size and activity level.
   • Avoid mixing with slow-moving fancy goldfish or aggressive/tropical fish.

7. Behavior and Compatibility:

   • Yellow and Black Comet Goldfish are fast swimmers and very active, often exploring their surroundings and interacting with their owners.
   • They are social and do best in groups, provided there is enough space to prevent competition for food or territory.